Phytophthora

[RPA]

Found this at weekend on HC, Phytophthora bleeding canker

[Steve Bullman]

yep! heres a better challenge...try find a chestnut without it!

[RPA]

yep! heres a better challenge...try find a chestnut without it!

 

Dont get it as much up here as u lot down south!

[vduben]

i tell ya mate, here in the midlands its rife!!!!!!!!!!

every cheggy i see has it!!!

[bob]

we started a couple of years ago with tons suffering but are finding some are fighting it and seem to be recovering so are now assessing risk and monitoring and not felling as many

[nuttyarb]

It is now often attributed to a bacterium and called Chestnut Bleeding Canker. http://www.bspp.org.uk/NDR/july2007/2007-64.asp

Phytophthora is said to be quite rare in causing these symptoms.

[Marc]

Does anyone reduce trees with bleeding canker? I always think it pointless unless the tree has die back in the crown, yet i've done quite a few reductions on infected trees this year, can't help but feel i'm doing more harm than good. Not that reductions are ever good.

 

I've dismantled some pretty manky chesnuts, once the upper stems are girdled by the canker they seem to deterioate quickly.

[Yorkshireman]

bacterium associated with this I believe to be Pseudomonas syringae

 

 

As nutty arb said

[David Humphries]

Has anyone else seen the articles on the HC leaf minor being a possible vector for the bacterial infection.

 

Any thoughts anyone?

[MattyF]

Has anyone else seen the articles on the HC leaf minor being a possible vector for the bacterial infection.

 

Any thoughts anyone?

 

not from what i have seen around my way..... one of the first ones i diagnosed with leaf miner a few years ago,whilst every tree around it showed sighns of bleeding canker this one did not and still doesnt ive also repollared some old hulks that had severe bleeding canker they came back very lush but got leaf minor the next year wich they defineitly did not have when i pruned them as it was in sept when its very noticabe...not that i would rule what your saying ...many ive seen that have had bleeding canker now have both but they seem to show sighns of bleeding canker first...ive also noticed sycomore with leaf miner this year as well,and birch and maples with severe cankers